I mostly ride for fun and exercise. I am trying to push myself to increase endurance but I am not a racer by any means. Currently have a GMC Envoy (cheap, looks like a road bike with MTB gearing) and a 90's Raleigh M40 step-thru MTB. Both are yard sale finds. I ride 95% pavement with the occasional grass, dirt or gravel. There are some pretty good hills in my area. I find the ride of the Aluminum Envoy with drops and aluminum front fork to be hard on my wrists sometimes (our neighborhood has it's share of potholes). So I end up on the MTB most of the time. I don't do enough off-road to really need a big knobby tire so I have been thinking about a hybrid. This weekend I went to see a 94 Schwinn Crisscross. It was in like new shape with new tires but a 17" frame. For $50 I bought it anyway. When I got home we found it fits my wife perfectly. So she is retiring her 92 Schwinn Mirada sport step-thru. I am still looking.

Locally on CL I see a 94 Cannondale H300 Aluminum W/ ChroMoly fork 22" frame asking $200
also on CL but an hours drive away I see another Schwinn Crisscross ChroMoly 18" or 20" frame asking $70

I am 5'10" and 48yr male

Provided they fit, would of any of these potentially be good bikes for my riding style? Or should I just get some smooth tires for one of my existing bikes. I still like to try to go fast on occasion but mostly looking for decent ride with ability to get to muscle fatigue before joints are beat up.